All vulnerabilities
CVE-2026-78356

OTRS: Unauthenticated Disclosure of Agent Frontend Configuration

OTRS GmbH (former OTRS AG) OTRS
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.28%Chance of exploitation activity in the next 30 days, higher than 19% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published12 Oct 2026Updated 15 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

The OTRS Agent Frontend configuration endpoint can be accessed without authentication. This allows unauthenticated remote users to retrieve internal application configuration that is intended for use by the authenticated Agent Frontend. The exposed information may include configured frontend routes and their associated authorization groups, authentication configuration, enabled product features, third-party integration settings, and other implementation details.

The exposed configuration does not directly contain user credentials or provide unauthorized modification of the OTRS configuration. However, the disclosed information may assist an attacker in fingerprinting the affected OTRS installation and identifying enabled functionality or security-relevant configuration that could be used to prepare further attacks.

This issue affects OTRS:

  • 8.0.X
  • 2023.X
  • 2024.X
  • 2025.X
  • 2026.X before 2026.7.X

Text from CVE List

Affected versions 5

  • OTRSaffected: 8.0.xCVE List
  • OTRSaffected: 2023.xCVE List
  • OTRSaffected: 2024.xCVE List
  • OTRSaffected: 2025.xCVE List
  • OTRSaffected: 2026.x through 2026.6.xCVE List

References 1